Product Description
The CMT Hinge Boring Bit 17 x 57.5mm Right-Hand is a precision-engineered carbide-tipped boring tool designed for drilling flat-bottom hinge cup holes in cabinet doors, face frames, and panel components. Built for use on boring machines equipped with adaptors or chucks, this bit delivers the clean, accurate results required for European-style concealed hinge installation. The 10x26mm parallel shank with driving flat and length adjusting screw ensures secure, repeatable positioning in production and shop environments. CMT backs this bit with a super-strength steel body, a carbide (HW) head with precision balanced centre point, and a P.T.F.E. coating on the cutter portion that resists pitch and glue buildup during extended use.
Key Features
- HW (Tungsten Carbide) Head with Precision Balanced Centre Point - the carbide-tipped construction maintains cutting accuracy and edge retention through repeated use in hardwood, softwood, chipboard, MDF, and plywood, reducing downtime for resharpening or replacement.
- 2 HW Precision Ground Cutting Edges (Z2) - dual carbide cutting edges distribute the cutting load evenly, producing a consistent flat-bottom bore geometry required for European concealed hinge cups.
- 2 Negatively Ground Spurs (V2) - the negatively ground spur configuration scores the material ahead of the cutting edges, resulting in clean bore walls with minimal tearout - especially important when working with veneered panels and finished cabinet doors.
- P.T.F.E. Coating on the Cutter Portion - the orange or black P.T.F.E. coating prevents pitch and glue buildup on the cutter, extending tool life and maintaining smooth cutting performance without frequent cleaning stops.
- Super-Strength Steel Body - the robust steel construction withstands the stresses of high-cycle boring machine operation, providing durability in production cabinet and furniture manufacturing settings.
- Parallel Shank with Driving Flat and Length Adjusting Screw - enables precise depth control and secure chuck or adaptor engagement, supporting consistent hinge cup depth across a full run of cabinet doors.
- Right-Hand (RH) Rotation - compatible with standard right-hand rotation boring machines, CNC boring centers, multi-spindle machines, and panel processing centers equipped with adaptors or chucks.
- 17mm Diameter - matches the standard hinge cup diameter used in European concealed hinge systems, ensuring proper fit and function without additional sizing or adjustment.
Why This Product
- The 17mm flat-bottom cutting geometry and negatively ground spurs address the exact requirements of European concealed hinge installation - producing clean, accurately sized hinge cup holes without tearout in finished panels or veneered surfaces.
- The P.T.F.E.-coated cutter portion and HW carbide construction make this bit suited for sustained production use in materials including solid hardwood, chipboard, MDF, and plywood - where buildup and edge wear are common problems with uncoated tools.
- The parallel shank with driving flat and length adjusting screw gives operators repeatable depth control on boring machines with adaptors or chucks, reducing setup time and improving consistency across high-volume cabinet door runs.
- At 57.5mm total length with a 10x26mm shank, the bit is sized for compatibility with boring machines equipped with adaptors or chucks used in cabinet production and panel processing applications.
Specifications
- Manufacturer Part Number: 317.170.11
- Brand: CMT Orange Tools
- Diameter: 17mm
- Total Length: 57.5mm
- Shank: 10x26mm
- Rotation: Right-Hand (RH)
- Number of Spurs: 2
- Number of Cutting Edges: 2
- Spur Geometry: Negatively ground spurs
- Head Material: HW (Tungsten Carbide)
- Body Material: Super-strength steel
- Cutter Coating: P.T.F.E. (orange or black)
- Product Type: Hinge Boring Bit
Approved Applications
- Drilling flat-bottom hinge cup holes in cabinet doors and face frames
- European concealed hinge installation in cabinet and furniture manufacturing
- Panel boring on multi-spindle CNC boring machines
- Hinge cup drilling on boring machines equipped with adaptors or chucks
- Production boring in solid hardwood, softwood, chipboard, MDF, and plywood
Frequently Asked Questions
What machines is this hinge boring bit compatible with?
This bit is designed for boring machines equipped with adaptors or chucks. The 10x26mm parallel shank with driving flat accommodates standard chuck and adaptor configurations found on multi-spindle CNC boring machines, CNC boring centers, and panel processing centers.
What is the purpose of the negatively ground spurs on this bit?
The 2 negatively ground spurs (V2) score the material fibers ahead of the carbide cutting edges, producing clean bore walls and a flat-bottom hole profile. This is particularly important when boring into veneered panels, MDF, and finished cabinet door blanks where surface tearout is a concern.
Why does the cutter portion have a P.T.F.E. coating?
The orange or black P.T.F.E. coating on the cutter portion prevents pitch and glue buildup during boring operations. This reduces friction, keeps the cutting edges cleaner during production runs, and extends the overall service life of the bit.
What does the length adjusting screw on the shank do?
The parallel shank includes a driving flat and a length adjusting screw that allows the operator to set and lock the exact boring depth. This feature supports consistent, repeatable hinge cup depth across an entire production run of cabinet doors or panels without requiring manual re-measurement between operations.
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